U.S. patent application number 12/978634 was filed with the patent office on 2012-06-28 for pump structure for dispenser.
This patent application is currently assigned to ANNE BERG CO., LTD.. Invention is credited to Jong Wu CHEN, Wei Cheng CHEN, Wei Shiu CHEN, Han Chang CHIANG, Hsiang Jen HSIAO, Chin Tsang HSU, Hui Min HSU, Po Han HUANG, Wei Tsang LAI, Ming Hsien SUNG.
Application Number | 20120160872 12/978634 |
Document ID | / |
Family ID | 46315437 |
Filed Date | 2012-06-28 |
United States Patent
Application |
20120160872 |
Kind Code |
A1 |
HSU; Hui Min ; et
al. |
June 28, 2012 |
PUMP STRUCTURE FOR DISPENSER
Abstract
A pump structure for dispenser includes a base having a space
defined therein and passing therethrough. The base has a vertical
groove axially defined in an outer periphery thereof and a
plurality of horizontal grooves parallelly defined in the outer
periphery thereof and communicated with the horizontal grooves. A
base ring is sleeved on the base. The base ring has a protrusion
extending from an inner periphery thereof for slidably moving in
the vertical groove and the horizontal groove. A saddle head is
movably sleeved on the base. An upper valve set is mounted in a
pathway in the saddle head and a lower valve set is mounted in the
space in the base.
Inventors: |
HSU; Hui Min; (Taichung
City, TW) ; HSU; Chin Tsang; (Taichung City, TW)
; CHIANG; Han Chang; (Taichung City, TW) ; SUNG;
Ming Hsien; (Taichung City, TW) ; HUANG; Po Han;
(Taichung City, TW) ; CHEN; Wei Cheng; (Taichung
City, TW) ; HSIAO; Hsiang Jen; (Taichung City,
TW) ; CHEN; Jong Wu; (Taichung City, TW) ;
CHEN; Wei Shiu; (Taichung City, TW) ; LAI; Wei
Tsang; (Taichung City, TW) |
Assignee: |
ANNE BERG CO., LTD.
Taichung City
TW
|
Family ID: |
46315437 |
Appl. No.: |
12/978634 |
Filed: |
December 27, 2010 |
Current U.S.
Class: |
222/321.1 ;
222/340 |
Current CPC
Class: |
B05B 11/3008
20130101 |
Class at
Publication: |
222/321.1 ;
222/340 |
International
Class: |
B65D 88/54 20060101
B65D088/54 |
Claims
1. A pump structure for dispenser comprising: a base adapted to
assemble with a bottle, the base having a space defined therein and
passing therethrough, the base having a vertical groove axially
defined in an outer periphery thereof and a plurality of horizontal
grooves parallelly defined in the outer periphery thereof, the
vertical groove communicated with the horizontal grooves; a base
ring sleeved on the base, the base ring having a protrusion
extending from an inner periphery thereof, the protrusion being
slidably movable in the vertical groove and the horizontal grooves;
a saddle head movably sleeved on the base, the saddle head having a
pathway defined therein and passing therethrough, the saddle head
having a piston movably received in the space, the piston having an
outer periphery abutting against an inner periphery of the space, a
spring sleeved on the base, the spring having two ends respectively
abutting against the saddle head and the base ring for providing a
restitution force; and an upper valve set mounted in the pathway
and a lower valve set mounted in the space in the base, the upper
valve set having a same structure with the lower valve set, each of
the upper valve set and the lower valve set having an outer ring
and an inner ring received in the outer ring, each outer ring
having a plunger disposed therein and a plurality of ribs connected
with the plunger and an inner periphery of the outer ring, each
inner ring having a guiding path defined therein, the plunger of
the outer ring being able to selectively seal the guiding path of
the corresponding inner ring; wherein when the saddle head is
pressed, the piston presses the air in the space to push the
plunger of the outer ring of the upper valve set such that the air
is exhausted from the pathway in the saddle head, the plunger of
the outer ring of the lower valve set pressed by the air to seal
the guiding path of the inner ring; when the saddle head is
released and returned due to the restitution force of the spring,
the piston of the upper valve set upwardly is moved such that the
air pressure in the space is decreased to suck the outer ring of
the lower valve set upwardly moved relative to the inner ring and
to suck the liquid in the bottle flowing into the space via the
guiding path in the inner ring of the lower valve set, in the
meanwhile, the outer ring of the upper valve set downwardly sucked
by the air pressure in the space such that the plunger is sealed
the guiding path of the upper valve set; when the saddle head is
pressed again, the liquid in the space is able to be drained from
the pathway for providing rationing liquid; wherein when the base
ring is axially moved relative to the base, the protrusion is moved
along the vertical groove for adjusting a distance between the
saddle head and the base ring such that an amount of the liquid
drained from the space is adjusted; when the base ring is rotated
relative to the base, the protrusion is moved along one of the
plurality of the horizontal grooves for fixing the distance between
the saddle head and the base ring.
2. The pump structure for dispenser as claimed in claim 1, wherein
the saddle head has a seat mounted in interior thereof for
receiving the upper valve set, the piston sleeved on a bottom end
of the seat, the saddle head having a skirt downwardly formed
thereon, the base located between the skirt and the seat.
3. The pump structure for dispenser as claimed in claim 1, wherein
the base ring has an indicator disposed thereon and corresponding
to a location of the protrusion.
4. The pump structure for dispenser as claimed in claim 1, wherein
at least one of the horizontal grooves extending toward a direction
opposite to the other horizontal grooves such that the base ring is
able to be bidirectionally rotated.
5. The pump structure for dispenser as claimed in claim 1, wherein
the saddle head has a flange annularly and outwardly extending
therefrom, the two ends of the spring respectively abutted against
the base ring and the flange.
6. The pump structure for dispenser as claimed in claim 2, wherein
the base has a dove-tail flange annularly and outwardly extending
therefrom, the skirt having a dove-tail flange annularly and
inwardly extending therefrom for corresponding to the dove-tail
flange of the base such that the dove-tail flange of the base and
the dove-tail flange of the skirt are buckled to each other for
preventing the saddle head detaching from the base.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to pump structure for a
dispenser, and more particularly to a dispenser pump structure for
adjusting rationing liquid.
[0003] 2. Description of Related Art
[0004] A conventional dispenser provides a double pistons structure
for dispensing emulsion. The conventional dispenser includes a pump
and an inductor received in the pump. The inductor has a top
connected with a saddle head. The pump has an actuating groove
defined therein for receiving the inductor. An elastomer is located
in the actuating groove and connected with a bottom of the
inductor. A valve is positioned in a bottom of the actuating
groove. A piston set is assembled with the inductor. The piston set
includes a first piston and a second piston connected with the
first piston. The first piston includes a first tube for assembling
with the inductor and a first flange for abutting against an inner
periphery of the actuating groove. The second piston includes a
second tube for assembling with the first piston and a second
flange for abutting against the inner periphery of the actuating
groove. The conventional dispenser is strengthened due to the
double pistons structure for providing a long-wearing effect.
[0005] However, the conventional dispenser is not able to provide
quantitatively rationing. The rationing of the conventional
dispenser is decided by a pressure on the saddle head. This is
inconvenient and is not able to provide a precise ration. When the
pressure is over the expected value, the overflow dose will cause
waste.
[0006] The present invention has arisen to obviate/mitigate the
disadvantages of the conventional dispenser.
SUMMARY OF THE INVENTION
[0007] The main objective of the present invention is to provide an
improved pump structure for dispenser.
[0008] To achieve the objective, a pump structure for dispenser in
accordance with the present invention comprises a base adapted to
assemble with a bottle. The base has a space defined therein and
passing therethrough. The base has a vertical groove axially
defined in an outer periphery thereof and a plurality of horizontal
grooves parallelly defined in the outer periphery thereof. The
vertical groove is communicated with the horizontal grooves. At
least one horizontal groove extends toward a direction opposite to
the other horizontal grooves. A base ring is sleeved on the base.
The base ring has a protrusion extending from an inner periphery
thereof The protrusion is slidably movable in the vertical groove
and the horizontal grooves. The base ring has an indicator disposed
thereon and corresponding to a location of the protrusion. The base
ring is able to be bidirectionally rotated. A saddle head is
movably sleeved on the base. The saddle head has a pathway defined
therein and passing therethrough. The saddle head has a piston
movably received in the space. The piston has an outer periphery
abutting against an inner periphery of the space. A spring is
sleeved on the base. The spring has two ends respectively abutting
against the saddle head and the base ring for providing a
restitution force. An upper valve set is mounted in the pathway and
a lower valve set is mounted in the space in the base. The upper
valve set has a same structure with the lower valve set. Each of
the upper valve set and the lower valve set has an outer ring and
an inner ring received in the outer ring. Each outer ring has a
plunger disposed therein and a plurality of ribs connected with the
plunger and an inner periphery of the outer ring. Each inner ring
has a guiding path defined therein. The plunger of the outer ring
is able to selectively seal the guiding path of the corresponding
inner ring. The saddle head has a seat mounted in interior thereof
for receiving the upper valve set. The piston is sleeved on a
bottom end of the seat. The saddle head has a skirt downwardly
formed thereon. The base is located between the skirt and the seat.
The base has a dove-tail flange annularly and outwardly extending
therefrom. The skirt has a dove-tail flange annularly and inwardly
extending therefrom for corresponding to the dove-tail flange of
the base such that the dove-tail flange of the base and the
dove-tail flange of the skirt are buckled to each other for
preventing the saddle head detaching from the base.
[0009] When the saddle head is pressed, the piston presses the air
in the space to push the plunger of the outer ring of the upper
valve set such that the air is exhausted from the pathway in the
saddle head. The plunger of the outer ring of the lower valve set
is pressed by the air to seal the guiding path of the inner
ring.
[0010] When the saddle head is released and returned due to the
restitution force of the spring, the piston of the upper valve set
is upwardly moved such that the air pressure in the space is
decreased to suck the outer ring of the lower valve set upwardly
moved relative to the inner ring and to suck the liquid in the
bottle flowing into the space via the guiding path in the inner
ring of the lower valve set. In the meanwhile, the outer ring of
the upper valve set is downwardly sucked by the air pressure in the
space such that the plunger is sealed the guiding path of the upper
valve set.
[0011] When the saddle head is pressed again, the liquid in the
space is able to be drained from the pathway for providing
rationing liquid.
[0012] When the base ring is longitudinally moved relative to the
base, the protrusion is moved along the vertical groove for
adjusting a distance between the saddle head and the base ring such
that an amount of the liquid drained from the space is
adjusted.
[0013] When the base ring is rotated relative to the base, the
protrusion is moved along one of the plurality of the horizontal
grooves for fixing the distance between the saddle head and the
base ring.
[0014] In accordance with another aspect of the present invention,
the saddle head has a flange annularly and outwardly extending
therefrom. The two ends of the spring are respectively abutted
against the base ring and the flange.
[0015] Further benefits and advantages of the present invention
will become apparent after a careful reading of the detailed
description with appropriate reference to the accompanying
drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0016] FIG. 1 is an exploded perspective view of a pump structure
for dispenser in accordance with the present invention;
[0017] FIG. 2 is an assembled perspective view of the pump
structure for dispenser in accordance with the present
invention;
[0018] FIGS. 3-5 are operational cross-sectional views of the pump
structure for dispenser in accordance with the present invention;
and
[0019] FIG. 6 is an assembled perspective view of a second
embodiment of the pump structure for dispenser in accordance with
the present invention.
DETAILED DESCRIPTION OF THE INVENTION
[0020] Referring to the drawings and initially to FIGS. 1-2, the
pump structure for dispenser in accordance with the present
invention comprises a base 1 adapted to assemble with a bottle (not
shown), a base ring 5 sleeve on a lower end of the base 1, a saddle
head 2 movably sleeved on a upper end of the base 1, an upper valve
set 3 mounted in the saddle head 2, and a lower valve set 4 mounted
in the base 1.
[0021] The base 1 has a tubular structure. The base 1 has a space
11 defined therein and passing therethrough. The base 1 has the
lower end adapted to connect with the bottle and the lower valve
set 4 is mounted in the lower end of the base 1 for communicating
the bottle and the space 11. The base 1 has a vertical groove 52
axially defined in an outer periphery thereof and a plurality of
horizontal grooves 53 parallelly defined in the outer periphery
thereof. The vertical groove 52 is communicated with the horizontal
grooves 53. At least one horizontal groove 53 extends toward a
direction opposite to the other horizontal grooves 53 and has one
end communicating with the vertical groove 52. In the preferred
embodiment of the present invention, the base 1 has three
horizontal grooves 53 parallelly defined in the outer periphery
thereof. A middle horizontal groove 53 of the three horizontal
grooves 53 extends opposite to the other horizontal grooves 53.
[0022] The base ring 5 has a flat plate structure. The base ring 5
is able to move and rotate relative to the base 1. The base ring 5
has a protrusion 51 extending from an inner periphery thereof The
protrusion 51 is slidably movable in the vertical groove 52 and the
horizontal grooves 53. The base ring 5 has an indicator 54 disposed
thereon and corresponding to a location of the protrusion 51.
[0023] The saddle head 2 has a pathway 25 defined therein and
passing therethrough. The saddle head 2 has a piston 21 movably
received in the space 11. The piston 21 has an outer periphery
abutting against an inner periphery of the space 11. As shown in
FIGS. 1 and 3, the saddle head 2 has a seat 22 mounted in interior
thereof for receiving the upper valve set 3. The piston 21 is
sleeved on a bottom end of the seat 22. The saddle head 2 has a
skirt 23 downwardly formed thereon. The base 1 is located between
the skirt 23 and the seat 22. The base 1 has a dove-tail flange 12
annularly and outwardly extending therefrom. The skirt 23 has a
dove-tail flange 24 annularly and inwardly extending therefrom for
corresponding to the dove-tail flange 12 of the base 1 such that
the dove-tail flange 12 of the base 1 and the dove-tail flange 24
of the skirt 23 are buckled to each other for preventing the saddle
head 2 detaching from the base 1. The saddle head 2 is slidably
moved relative to the base 1. The piston 21 is able to compress and
exhaust the air in the space 11. A spring 13 is sleeved on the base
1. The spring 13 has two ends respectively abutting against an
inner periphery of the skirt 23 of the saddle head 2 and the base
ring 5 for providing a restitution force.
[0024] As shown in FIGS. 1 and 3, the upper valve set 3 is mounted
in the pathway 25 and the lower valve set 4 is mounted in the space
11 in the base 1. The upper valve set 3 has a same structure with
the lower valve set 4. The upper valve set 3 has an outer ring 31
and an inner ring 32 received in the outer ring 31. The outer ring
31 of the upper valve set 3 has a plunger 311 disposed therein and
a plurality of ribs 312 connected with the plunger 311 and an inner
periphery of the outer ring 31. The inner ring 32 of the upper
valve set 3 has a guiding path 321 defined therein. The plunger 311
of the outer ring 31 of the upper valve set 3 is able to
selectively seal the guiding path 321 of the inner ring 32 of the
upper valve set 3. The lower valve set 4 has an outer ring 41 and
an inner ring 42 received in the outer ring 41 The outer ring 41 of
the lower valve set 4 has a plunger 411 disposed therein and a
plurality of ribs 412 connected with the plunger 411 and an inner
periphery of the outer ring 41. The inner ring 42 of the lower
valve set 4 has a guiding path 421 defined therein. The plunger 411
of the outer ring 41 of the lower valve set 4 is able to
selectively seal the guiding path 421 of the inner ring 42 of the
lower valve set 4. Precisely, each outer ring 31, 41 has three ribs
312, 412 equidistantly connected with the plunger 311, 411 and the
inner periphery of the outer ring 31, 41. The ribs 312, 412 are
provided for a restitution force to selectively seal the guiding
path 321, 421 and positioning the plunger 311, 411 to partially
insert into the guiding path 321, 421.
[0025] In the preferred embodiment of the present invention, each
plunger 311, 411 has a hemispherical shaped structure for tightly
plunging into the guiding path 321, 421. Each guiding path has a
downwardly tapered structure. The part of each guiding path 321,
421 contacted with the corresponding plunger 311, 411 has a rounded
structure for preventing the plunger 311, 411 from damaging.
[0026] With reference to FIGS. 3-4, when the saddle head 2 is
pressed, the piston 21 presses the air in the space 11 to push the
plunger 311 of the outer ring 31 of the upper valve set 3 such that
the air exhausted from the pathway 25 in the saddle head 2. The
plunger 411 of the outer ring 41 of the lower valve set 4 is
pressed by the air to seal the guiding path 421 of the inner ring
42 of the lower valve set 4. When the saddle head 2 is released and
returned due to the restitution force of the spring 13, the piston
21 of the upper valve set 3 is upwardly moved such that the air
pressure in the space 11 is decreased to suck the outer ring 41 of
the lower valve set 4 upwardly moved relative to the inner ring 42
and to suck the liquid in the bottle flowing into the space 11 via
the guiding path 421 in the inner ring 42 of the lower valve set 4.
In the meanwhile, the outer ring 31 of the upper valve set 3 is
downwardly sucked by the air pressure in the space 11 such that the
plunger 311 is sealed the guiding path 321 of the upper valve set
3. When the saddle head 2 is pressed again, the liquid in the space
11 is able to be drained from the pathway 25. When the saddle head
2 is released again, the liquid in the bottle is sucked into the
space 11 again for providing rationing liquid.
[0027] As above described, the saddle head 2 is pressed in a first
time, the air in the space 11 is exhausted outside. When the saddle
head 2 is restored, the liquid in the bottle is drained into the
space 11. Later, the space 11 is refilled with the liquid when the
saddle head 2 is pressed in every time. The dose of the liquid
drained from the saddle head 2 is the same with that refilled in
the space 11. Therefore, the dose of the liquid is stable in every
time for providing the rationing liquid.
[0028] With reference to FIGS. 3-5, when the base ring 5 is
longitudinally moved relative to the base 1, the protrusion 51 of
the base ring 5 is moved along the vertical groove 52 for adjusting
a distance between the saddle head 2 and the base ring 5. When the
base ring 5 is rotated relative to the base 1, the protrusion 51 is
moved along one of the plurality of the horizontal grooves 53 for
fixing the distance between the saddle head 2 and the base ring 5.
The saddle head 2 is pressed and released to process a stroke. The
stroke of the saddle head 2 is adjustable due to the distance
between the saddle head 2 and the base ring 5. When the base ring 5
is downwardly moved, the base ring 5 is away from the saddle head 2
such that the stroke of the saddle head 2 is increased and the
piston 21 is able to deeply move in the space 11. The liquid
drained from the space 11 is increased during every stroke of the
saddle head 2. When the base ring 5 is upwardly moved, the base
ring 5 is close to the saddle head 2 such that the stroke of the
saddle head 2 is decreased and the piston 21 is able to shallowly
move in the space 11. The liquid drained from the space 11 is
decreased during every stroke of the saddle head 2. Therefore, a
user can easily adjust an amount of the liquid drained from the
space 11 to prevent from wasting. In the preferred embodiment, the
middle horizontal groove 53 and the other two horizontal grooves 53
respectively extends from two opposite sides of the vertical groove
52 such that the base ring 5 is able to be bidirectionally rotated.
The user can easily confirm the distance between the saddle head 2
and the base ring 5 by rotating the base ring 5 along different
extending directions of the horizontal grooves 53.
[0029] With reference to FIG. 6, that shows a second embodiment of
the pump structure for dispenser in accordance with the present
invention. The elements and effects of the second embodiment which
are the same with the first embodiment are not described, only the
differences are described. The saddle head 2 has a flange 26
annularly and outwardly extending therefrom to form a flat plate.
The two ends of the spring 13 are respectively abutted against the
base ring 5 and the flange 26.
[0030] Although the invention has been explained in relations to
its preferred embodiment, it is to be understood that many other
possible modifications and variations can be made without departing
from the spirit and scope of the invention as hereinafter
claimed.
* * * * *